Average Error: 0.0 → 0.0
Time: 2.0s
Precision: 64
\[x \cdot x - 1.0\]
↓
\[x \cdot x - 1.0\]
x \cdot x - 1.0
↓
x \cdot x - 1.0
double f(double x) {
        double r10378235 = x;
        double r10378236 = r10378235 * r10378235;
        double r10378237 = 1.0;
        double r10378238 = r10378236 - r10378237;
        return r10378238;
}
↓
double f(double x) {
        double r10378239 = x;
        double r10378240 = r10378239 * r10378239;
        double r10378241 = 1.0;
        double r10378242 = r10378240 - r10378241;
        return r10378242;
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.0

    \[x \cdot x - 1.0\]

  2. Final simplification0.0

    \[\leadsto x \cdot x - 1.0\]

Reproduce

herbie shell --seed 2019165 
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  (- (* x x) 1.0))